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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | SCHEDULE II – VALUATION and QUALIFYING ACCOUNTS For the Fiscal Years of 2015, 2016 and 2017 ODYSSEY MARINE EXPLORATION, INC. AND SUBSIDIARIES
|  | Balance at Beginning of Year |  |  | Charged (Credited) to Expenses |  |  | Charged (Credited) to Other Accounts |  |  | Deductions |  |  | Balance at End of Year |
Inventory reserve |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  |  | 371,332 |  |  |  | — |  |  |  | (251,023 | ) |  |  | (120,309 | ) |  |  | — |
2016 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
2017 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Accounts receivable reserve |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  |  | 4,631,593 |  |  |  | — |  |  |  | (2,315,796 | ) |  |  | — |  |  |  | 2,315,797 |
2016 |  |  | 2,315,797 |  |  |  | — |  |  |  | 29,932 |  |  |  | — |  |  |  | 2,345,729 |
2017 |  |  | 2,345,729 |  |  |  | — |  |  |  | — |  |  |  | (2,345,729 | ) |  |  | — |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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